What happened to the arrow to vote a comment?

Question

I was voting two comments, and when I was voting the second one, the arrow to vote it vanished.

• I voted the first comment
• I voted the second comment, but I did it too fast
• I clicked on the dialog box saying I have to vote a comment every 5 seconds
• I tried again to vote, but I forgot the counter has been reset; the dialog box still reminds me of the 5 seconds limit
• I tried once again, but 5 seconds were not passed

• I don't see any more the number of votes the comment already received, and the arrow is replaced with a link

  

I also tried with the first comment on this very question: I clicked the arrow to vote it, and without to wait 5 seconds, I clicked the arrow again. The result is the following one:

If I click on the "upvote" link, what I get is the following:

The votes, including mine, were two; where is now the other vote?

What happened?
If this makes any difference, I am using Safari 5.1.1 on Mac OS X 10.7.2.

When I look at the Safari's "Activity" window, I notice the following events:

Answer 1

I couldn't reproduce everything you and Kevin describe, but some of it. Should be all fixed in the next build.

Answer 2

You stopped too early! The fun hasn't stopped yet!!

There are actually 5 steps in the process:

1. Initial state with darkened arrow and previous number (if any) on hover

   

2. The standard number + darkened arrow after clicking "upvote".

   

3. Click the darkened arrow again (I did this all with one post, you had more comments involved). Did you get the "You may only submit a comment vote every 5 seconds" notification?

   • Yes, you get the number + upvote link

     

   • No, GOTO 6

4. Click the upvote link for removed numbers and a darkened arrow where the numbers used to be

   

5. Click the darkened arrow for an upvote link and still no numbers

   

6. Click the upvote link for a darkened arrow and still no numbers. GOTO 5